I am an avid listener of their podcast and look forward to connecting with other like minded individuals.

Anyone in sales knows that the individual that leaves to "think about it" will probably never be back.

I bought the home from the individual then turned around and wrote up a lease for them.

Having invested in both cattle farms and The guide dogs of America charity, one is protected under individual disability discrimination laws one is not. 

Also watch out for rules that would impact your tenancy i.e. no rentals with short term leases or leases less than 2 years, or no renting out individual rooms, or no rentals to individuals with different last names.  

For more on disqualified individuals, see the following. https://www.irs.gov/retirement-plans/retirement-plan-investments-faqs

I also want to build a great network of like minded individuals who want to help each other profit and prosper together in real estate investing!

The reason they do this is because individuals buying a small piece of land with a house on it, or with the intentions of building a house on it, are usually looking for a lower price point home and are not looking to invest by owning the minerals as well.

Question: would the capital gains tax be calculated individually after the profits are disbursed, or do I have to process that prior to disbursement and subtract out the estimated tab amount?

You can, however, have another unrelated individual with a SDIRA lend to your LLC from their SDIRA.